Machine for making foundry-molds.



No. 865,511. PATENTED SEPT. 10, L907.

G. P.v MEHAFPEY.

MACHINE FOR MAKING FOUNDRY MOLDS.

APPLICATION PILED SEPT. 19. 1906.

2 SHEETS-SHEET 1 INVENTOR WITNESSES Q J 41 a? z PATENTBD SEPT. 10, 1907.

' G. P. MEHAPFBY. MACHINE FOR MAKING FOUNDRY MOLDS.

APPLICATION FILED SEPT.19.19OG.

2 SHEETSSHEET 2.

0 l'V/TNESSES INIZ7OR g/ /uu/ m6 Allarney GEORGE P. MEHAFFEY, OF KNOXVILLE, TENNESSEE.

MACHINE FOR MAKING FOUNDRY-MOLDS.

v Specification of Letters Patent.

Application filed lsptemlier 19, 1906. Serial No. 335,226.

Xatented Sept. 10, 1907.

To all whom it may concern:

Be it known that I, GEORGE E. MEHAFFEY, a citizen of the United States, residing at Knoxville, in the county of Knox and State of Tennessea have invented a new and usefullmprovement in Machines for Making Foundry-Molds, of which the following is a specificati'on, reference being bad to theaccompanying drawing.

My improvement relates particularly to machines or apparatus adapted to .pass over beds or flasks containing sand and-automaticallyforming the molds in such sand. I

Q The apparatus comprises wheels adapted to run upon track, the rails of the track being separated far enough to make room for the bed of sand or the flasks between the rails.

The apparatus also comprises a large pattern roller resting upon and guided by said rails and having upon its peripherythe patterns which are to be molded.

The apparatiis also comprises a hopper at each side of said roller ,adapted to hold sandand discharge the same into the'path of said roller, either hopper being available at will, according tothe direction of movement of the apparatus. Between each hopper and said roller is means for striking or wiping the sand to a level and uniform surface. I

The apparatus also comprises mechanism for tempcring the sand prior-to the forming of the molds.

The object of the invention is to provide such a moldrorming apparatus in efficient, convenient, and durable form and adapted to accomplish a large amount oiwork in limited time.

In the accompanying drawings, '{Figure 1 is a sectional plan of the apparatus; Fig. 2 is a sectional side elevation;

The pattern roller, 1, is of relatively large diameter and is long enough to rest upon the rails, A, A. Each end of said roller is preferably provided with an annular shoulder, 2, engaging therails, so that the roller is held against endwise movement. If two halves or sections of the flask are to occupy the space between the rails, the surface of the rollerv is to have a groove, 3, midway between its ends to receive the hinges of the flasks. Y

Patterns, 4, are placed upon the periphery of'the roller'in proper positions to press into the sand in the halves or sections of the flasks. The patterns for each ilask section may be connected with gate patterns, 5.

tion to said valve.

In the form shown in the drawings, the patterns are for cylindrical castings similar to sash weights, and the patterns at opposite sidesof the groove, 3, are duplicates and so placed as to allow the impression made by each to register with the impression made by the other when the flask is closed.

The roller, 1, has an axle, 6, the ends of which extend into bearing blocks, 7, and said bearing blocks are confined on upright ways, 8, in theirame oi the apparatus, so that said roller may rest by its full weight upon the rails and edges oi the flask walls and the sand within theflasks, independently of up and down movements of the frame of the apparatus. The frame comprises two rectangular, duplicate, horizontal sections which meet and, are joined to each otherat the bearing block, 7. Each such frame section has side pieces, 9, parallel to the track rails, A, A, and said side pieces are joined by intervening transverse, horizontal pieces, 10.

Between the adjacent ends of the side pieces, 9, at the same side of the apparatus, a space block, 1], is placed above and below the bearing block, 7, and a bolt, if), is

'extended horizontally through each space block and upright ears, i3, on the ends 01 said side pieces. 9, the

space blocks being a little longer than the thickness of the bearing block in the direction parallel to the length of said side pieces. Thus said side pieces and the two sections of the frame are made rigid with each other, and the pattern roller, 1, is confined within said lrame,

but allowed free up and down movement, as above inparatus. The drawings show an electric motor, 17 applied to one axle, 15, of each of the frame sections. On each frame section is mounted a hopper, 18, for holding sand to be delivered into the space between the track rails, such hopper extending preferably across the full width of the frame 'and having at its bottom an outlet, 19, extending from one side of the frame to the other.

Into each .such outlet may be placed ahori'zontal winged valve, 20, driven by means of a sprocket chain 21, applied to a sprocket wheel,-22, on the shait, 23, oi the valve and a sprocket wheel, 24, on one of the axles 15, so that the rotation of said axle will transmit rota- Between each outlet, 19, and the roller, 1, is placed a striker or wiper, 25, secured to the frame by three members, 26, at a proper height to strike or wipe the sand falling from the adjacent hopper to the desired height.

For the tempering oi the sand, an agitatingor mixing mechanism, 27, is applied to the frame. Said mixing mechanism comprises a horizontal plate, 28, from which oblique blades, 29, extend downward far enough to reach into the sand. The drawings show two transverse rows of said blades, the blades of one row facing obliquely toward one of the rails while the blades of the other row lace obliquely toward the other rail so that when the apparatus is moved along upon the track, the forward blades wil cut the mass of sand and shift portions toward one side, While the rear blades again cut the sand and sliilt it in the opposite direction, said blades acting approximately like two gangs of plow shares. When the sand is to be tempered, the flasks are removed from between the rails and the sand placed between the rails in any suitable quantity and the mixinc mechanism applied to the apparatus at the desired height. 'lhcn tlie'apparatus is run back and forth upon the track. I 1

For securing the tempering mechanism to the frame ol the machine, a plate, 30, rises from the. plate, 28, adjacent the transverse piece. .10, and bolts, 3i, extend through said plate, 30, and said transverse piece The plate, 30, (or the transvcrse piece, l0) may have upright slots, 32, for receiving said bolts, so that the tempering mechanism maybe adjusted up and down and also removed.

When the apparatus is used for thus tempering the sand, the frame section to which the tempering mechanism is applied may be separatcd from the other frame section and only the first mentioned frame sect-ion propolled back and forth for the tempering: for. as already herein stated. cach tranie sect ion has four wheels and can, therefore, be operated independently ol' the other section Or the pattern roller may be removed from between the two t'rnme sectims, and the. cntirc llliiiit propelled back and forth for the tcmpcring.

A tempering mechanism may be applied at each end ot' the ironic, so as to doubt the working, capacity for thetempering process. Fig. loi tlicdrawingsshowssucli a mechanism applied a.t the left; hand end,- and indiat any time removed and the space upon the frame becates by dotted lines a similar mechanism at the right hand end of the apparatus.

It is to he observed also that the pattern roller may be tween and around the hoppers used for hauling castings out of the foundry and for other similar work. It is to be observed also that either frame section maybe used in this manner.

I claim as my invention:

1. in a machine of the nature described, a frame comprising two separable, abutting frame sections, wheels supportiug' said sections. and a pattern roller located between 1 said sections, substantially as describedv in a machine of the nature described, a frame comprising, two separable. abutting; frame sections, wheels supporting said sections. and a pattern roller located between said sections and adjustable up and down relative to said frame, substantially as described.

It. {in a machine of the nature described. a frame comprising two separable, abutting frame sections. wheels supporting said sections. and a pattern roller located between said sections and automatically adjustable up and down relntivc to said frame. substantially as described.

4. in a machine of the nature described, a frame comprising two separable. abutting frame sections, wheels supporting said sections. a pattern roller located between said sections. and :1 propelling motor applied to one of so sections. substantially as described. 7

5. In a machine of the nature described, a frame comprising two separable. abutting frame sections. wbeyts supporting said sections, upright ways at the junctii it said sections. hearing; blocks on said way s. and a pattern roller jourualcd in said bearing: blocks. substantially as described.

ti. in a machine oi the nature described, a frame comprising two sections, wheels supporting each section, ears and ways on the meeting ends of said sections. space blocks hetwcen said cars, bolts extending through said ears and said blocks. bearing blocks on said ways, and a pattern roller journuled in said bearing blocks, substantially as described.

in testimony whereof I have signed my name, in prestllt't or two witnesses, this 17th day of September, in the y ur onthousand nine hundred and six. 

